/* ============================================
   PORTFOLIO — DARK THEME
   ============================================ */

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --bg:        #0a0a0f;
  --bg-card:   #12121a;
  --bg-nav:    rgba(10, 10, 15, 0.85);
  --surface:   #1a1a25;
  --border:    #2a2a3a;
  --text:      #e4e4ed;
  --text-dim:  #8888a0;
  --accent:    #7c5cfc;
  --accent2:   #a78bfa;
  --accent-glow: rgba(124, 92, 252, 0.25);
  --green:     #34d399;
  --radius:    12px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  max-width: 100%;
  display: block;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

.accent {
  color: var(--accent);
}

/* ---------- NAV ---------- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: var(--bg-nav);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
}

.nav--scrolled {
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.4);
}

.nav__inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav__logo {
  font-family: 'JetBrains Mono', monospace;
  font-size: 1.4rem;
  font-weight: 700;
  letter-spacing: -0.5px;
}

.nav__links {
  display: flex;
  list-style: none;
  gap: 8px;
}

.nav__link {
  padding: 8px 16px;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-dim);
  transition: var(--transition);
}

.nav__link:hover,
.nav__link.active {
  color: var(--text);
  background: var(--surface);
}

.nav__link.active {
  color: var(--accent);
}

.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav__toggle span {
  width: 24px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: var(--transition);
}

/* ---------- HERO ---------- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 100px 24px 60px;
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 600px 400px at 50% 40%, var(--accent-glow), transparent),
    radial-gradient(ellipse 400px 300px at 80% 20%, rgba(167, 139, 250, 0.1), transparent),
    radial-gradient(ellipse 500px 500px at 20% 80%, rgba(52, 211, 153, 0.06), transparent);
  pointer-events: none;
}

.hero__content {
  position: relative;
  z-index: 1;
}

.hero__greeting {
  font-size: 1.1rem;
  color: var(--text-dim);
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 12px;
  opacity: 0;
  animation: fadeUp 0.6s 0.2s forwards;
}

.hero__name {
  font-size: clamp(2.5rem, 7vw, 4.5rem);
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 16px;
  opacity: 0;
  animation: fadeUp 0.6s 0.4s forwards;
}

.hero__role {
  font-size: 1.2rem;
  color: var(--accent2);
  font-weight: 500;
  margin-bottom: 16px;
  opacity: 0;
  animation: fadeUp 0.6s 0.6s forwards;
}

.hero__desc {
  max-width: 500px;
  margin: 0 auto 32px;
  color: var(--text-dim);
  font-size: 1.05rem;
  opacity: 0;
  animation: fadeUp 0.6s 0.8s forwards;
}

.hero__buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  opacity: 0;
  animation: fadeUp 0.6s 1s forwards;
}

.hero__scroll {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--text-dim);
  font-size: 0.75rem;
  letter-spacing: 1px;
  text-transform: uppercase;
  opacity: 0;
  animation: fadeUp 0.6s 1.2s forwards;
}

.hero__scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--accent), transparent);
  animation: scrollPulse 2s ease-in-out infinite;
}

/* ---------- BUTTONS ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 28px;
  border-radius: 10px;
  font-size: 0.95rem;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: var(--transition);
  font-family: inherit;
}

.btn--primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 4px 20px var(--accent-glow);
}

.btn--primary:hover {
  background: #6a4ae0;
  transform: translateY(-2px);
  box-shadow: 0 8px 30px var(--accent-glow);
}

.btn--outline {
  background: transparent;
  color: var(--text);
  border: 1.5px solid var(--border);
}

.btn--outline:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-2px);
}

.btn--full {
  width: 100%;
}

/* ---------- SECTIONS ---------- */
.section {
  padding: 100px 0;
}

.section__title {
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 800;
  text-align: center;
  margin-bottom: 56px;
  letter-spacing: -0.5px;
}

/* ---------- ABOUT ---------- */
.about__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}

.about__text p {
  color: var(--text-dim);
  margin-bottom: 16px;
  font-size: 1.05rem;
}

.about__skills h3 {
  font-size: 1.2rem;
  margin-bottom: 20px;
  color: var(--accent2);
}

.skills {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.skill__header {
  display: flex;
  justify-content: space-between;
  margin-bottom: 6px;
  font-size: 0.9rem;
  font-weight: 500;
}

.skill__header span:last-child {
  color: var(--accent);
}

.skill__bar {
  height: 8px;
  background: var(--surface);
  border-radius: 4px;
  overflow: hidden;
}

.skill__fill {
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  border-radius: 4px;
  transition: width 1.2s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ---------- PROJECTS ---------- */
.projects__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 24px;
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: var(--transition);
}

.card:hover {
  transform: translateY(-6px);
  border-color: var(--accent);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4), 0 0 0 1px var(--accent);
}

.card__image {
  height: 180px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.card__icon {
  font-size: 3rem;
}

.card__body {
  padding: 24px;
}

.card__title {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.card__desc {
  color: var(--text-dim);
  font-size: 0.92rem;
  margin-bottom: 16px;
  line-height: 1.5;
}

.card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
}

.tag {
  padding: 4px 10px;
  background: var(--surface);
  border-radius: 6px;
  font-size: 0.78rem;
  color: var(--accent2);
  font-weight: 500;
}

.card__links {
  display: flex;
  gap: 16px;
}

.card__link {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--accent);
  transition: var(--transition);
}

.card__link:hover {
  color: var(--accent2);
}

/* ---------- CONTACT ---------- */
.contact__subtitle {
  text-align: center;
  color: var(--text-dim);
  margin-top: -40px;
  margin-bottom: 48px;
  font-size: 1.1rem;
}

.contact__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}

.contact__item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 24px;
}

.contact__icon {
  font-size: 1.5rem;
  margin-top: 2px;
}

.contact__label {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-dim);
  margin-bottom: 2px;
}

.contact__value {
  font-size: 1rem;
  font-weight: 500;
}

a.contact__value:hover {
  color: var(--accent);
}

.status {
  color: var(--green);
}

.contact__socials {
  display: flex;
  gap: 12px;
  margin-top: 8px;
}

.social {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text-dim);
  transition: var(--transition);
}

.social:hover {
  color: var(--accent);
  border-color: var(--accent);
  transform: translateY(-3px);
}

/* ---------- FORM ---------- */
.form__group {
  position: relative;
  margin-bottom: 20px;
}

.form__group input,
.form__group textarea {
  width: 100%;
  padding: 14px 16px;
  background: var(--surface);
  border: 1.5px solid var(--border);
  border-radius: 10px;
  color: var(--text);
  font-size: 0.95rem;
  font-family: inherit;
  transition: var(--transition);
  outline: none;
}

.form__group input:focus,
.form__group textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

.form__group label {
  position: absolute;
  left: 16px;
  top: 14px;
  color: var(--text-dim);
  font-size: 0.95rem;
  pointer-events: none;
  transition: var(--transition);
}

.form__group input:focus + label,
.form__group input:not(:placeholder-shown) + label,
.form__group textarea:focus + label,
.form__group textarea:not(:placeholder-shown) + label {
  top: -10px;
  left: 12px;
  font-size: 0.75rem;
  background: var(--bg-card);
  padding: 0 6px;
  color: var(--accent);
}

.form__group textarea {
  resize: vertical;
  min-height: 120px;
}

.form__success {
  text-align: center;
  color: var(--green);
  font-weight: 600;
  margin-top: 12px;
  display: none;
}

.form__success.show {
  display: block;
  animation: fadeUp 0.4s forwards;
}

/* ---------- FOOTER ---------- */
.footer {
  border-top: 1px solid var(--border);
  padding: 24px 0;
  text-align: center;
  color: var(--text-dim);
  font-size: 0.85rem;
}

/* ---------- ANIMATIONS ---------- */
@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes scrollPulse {
  0%, 100% { opacity: 0.3; transform: scaleY(1); }
  50%      { opacity: 1;   transform: scaleY(1.2); }
}

.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s, transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- RESPONSIVE ---------- */
@media (max-width: 768px) {
  .nav__toggle {
    display: flex;
  }

  .nav__links {
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--bg-nav);
    backdrop-filter: blur(16px);
    flex-direction: column;
    padding: 16px 24px;
    border-bottom: 1px solid var(--border);
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    transition: var(--transition);
  }

  .nav__links.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: all;
  }

  .about__grid,
  .contact__grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .projects__grid {
    grid-template-columns: 1fr;
  }

  .hero__name {
    font-size: 2.4rem;
  }
}

@media (max-width: 480px) {
  .section {
    padding: 60px 0;
  }

  .section__title {
    margin-bottom: 36px;
  }

  .hero__buttons {
    flex-direction: column;
    align-items: center;
  }
}